Detections
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Dropbear SSH Server < 0.49.0 Hostkey Host Spoofing Vulnerability

medium Nessus Network Monitor Plugin ID 3929

Synopsis

The remote host is vulnerable to a flaw that would allow remote attackers to spoof trusted hosts.

Description

The remote host is running Dropbear, a small, open-source SSH server. The version of Dropbear installed on the remote host is prior to 0.49.0, and by default has a flaw where the application fails to warn if the hostkey file has changed. An attacker exploiting this flaw would be able to execute a man-in-the-middle attack against the Dropbear server.

Solution

Upgrade to version 0.49.0 or higher.

See Also

http://matt.ucc.asn.au/dropbear/CHANGES

Plugin Details

Severity: Medium

ID: 3929

Family: SSH

Published: 3/1/2007

Updated: 3/6/2019

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4

Vector: CVSS2#AV:A/AC:L/Au:N/C:P/I:P/A:N

CVSS v3

Risk Factor: Medium

Base Score: 5.4

Temporal Score: 5

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:matt_johnston:dropbear_ssh_server

Reference Information

CVE: CVE-2007-1099

BID: 22761